Destruction Of The Organ Of Hearing

When the glands pass into a sloughing state, the parts connected with
them are frequently damaged. Thus the ulceration of the parotid gland
often causes deafness, by the gangrenous matter communicating to the
eustachian tube and the inner ear, where it destroys the membrane of the
drum and the little bones belonging thereto, or by closing up the tube.
When the discharge from the outer ear is observed, the destruction has
already taken place, and it is too late to obviate the injury.